package com.im.filters;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;


public class AuthFilter implements Filter {

	@Override
	public void destroy() {
		

	}

	@Override
	public void doFilter(ServletRequest arg0, ServletResponse arg1,
			FilterChain chain) throws IOException, ServletException {
		
		HttpServletRequest request = (HttpServletRequest) arg0;
		HttpServletResponse response = (HttpServletResponse) arg1;
		
		HttpSession session = request.getSession();
		Object name = session.getAttribute("name");
		if(name!=null){
			response.getWriter().println("Welcome Mr. "+name);
			chain.doFilter(request, response);
		}else{
			response.sendRedirect("../login.jsp");
		}
	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
		

	}

}
